2011年12月31日星期六

SocialPipeline 12/31/2011 (p.m.)

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2011年12月30日星期五

SocialPipeline 12/31/2011 (a.m.)

  • tags: Brain Neuron

    • Glia cells: the brain's supervisors (credit: Gray's anatomy/Wikimedia Commons)

      Glia cells are central to the brain’s plasticity, Tel Aviv University researchers have found, controlling how the brain adapts, learns, and stores information — and their design can be implemented in neuromorphic computer chips.

      Glia cells (Greek for “glue,” also known as glial) hold the brain’s neurons together and protect the cells that determine our thoughts and behaviors. But glia cells have now been found to do much more: a mechanism within the glia cells also regulate the synapses, sorting information for learning purposes, according to Ph.D. student Maurizio De Pittà of TAU’s Schools of Physics and Astronomy and Electrical Engineering.

      “Glia cells are like the brain’s supervisors. They control the transfer of information between neurons, affecting how the brain processes information and learns.”

      De Pittà’s research, led by his TAU supervisor Prof. Eshel Ben-Jacob, along with Vladislav Volman of The Salk Institute and the University of California at San Diego and Hugues Berry of the Université de Lyon in France, has developed the first computer model that incorporates the influence of glia cells on synaptic information transfer.

      The model can also be implemented in technologies based on brain networks such as microchips and computer software, Prof. Ben-Jacob says, and can aid in research on brain disorders such as Alzheimer’s disease and epilepsy.

  • tags: Brain Neuron

    • The stimulus timing pattern that maximized the peak level of memory in a snail consisted of non-uniformly spaced serotonin (5-HT) applications with interstimulus intervals of 10, 10, 5 and 30 min. "Inducer" is a variable representing the synergistic interaction between two proteins (PKA and ERK) associated with memory. (Credit: Yili Zhang, et al./Nature Neuroscience)

      University of Texas Health Science Center at Houston (UTHealth) neuroscientists used the sea snail known as Aplysia californica to test an innovative learning strategy designed to help improve the brain’s memory, with encouraging results.

      The research could ultimately benefit people who have impairments resulting from aging, stroke, traumatic brain injury, or congenital cognitive impairments.

      Building on earlier research that identified proteins linked to memory, the UTHealth researchers created a mathematical model that tells them the temporal pattern (timing) of the activity of these proteins for the best learning experience. Using this model, the computer sorted through 10,000 different permutations to determine a schedule that would enhance memory.

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2011年12月26日星期一

SocialPipeline 12/26/2011 (p.m.)

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2011年12月23日星期五

SocialPipeline 12/24/2011 (a.m.)

    • 大陆网民不但饱受中国电信“乱宰”,还在饱受中国电信“乱欺诈”;明明是“狗肉”,非要挂着“羊头卖”。中国网民绝大多数用户使用“假宽带”浮出水面。据了解,使用4M宽带的用户中,平均速度在400KB/s以下的占91.2%;使用2M宽带平均速度在200KB/s以下的占83.5%;使用1M宽带在100KB/s一下的则占67.6%;多数用户办理的固网宽带带宽为2M或4M,而2M带宽下用户平均上网速度为142.2KB每秒,4M则为232.7KB每秒。全国固网宽带用户平均上网速度为199.3KB每秒,与名义速度差异极大。
    • The galaxy, which was discovered and confirmed using ground-based telescopes, is 12.9 billion light-years away. Data from Spitzer and Hubble were used to measure the galaxy’s high star production rate, equivalent to about 100 suns per year. For reference, our Milky Way galaxy is about five times larger and 100 times more massive than GN-108036, but makes roughly 30 times fewer stars per year.

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SocialPipeline 12/23/2011 (p.m.)

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2011年12月22日星期四

SocialPipeline 12/22/2011 (p.m.)

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2011年12月20日星期二

SocialPipeline 12/20/2011 (p.m.)

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2011年12月3日星期六

SocialPipeline 12/04/2011 (a.m.)

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2011年12月1日星期四

SocialPipeline 12/02/2011 (a.m.)

    • <p><span style="color: #000000;">缘起一篇转了很红的帖子,上面有胡适在1911年写的留学日记,内容大约是说胡适天天打牌,制定的学习计划都就没有实行云云。这篇帖子如同茫茫黑夜中的一座灯塔,为无数宅男宅女带去了光明和希望,只要把“打牌”换成“上网”之类的,大师其实和我们差不多。</span></p><br/><p><span style="color: #000000;">结果我在豆瓣上看到有一个帖子专门来考据这篇帖子的真伪,于是出现各种真相帝,基本可以证实这篇日记是伪作,但是胡适打牌的事情是属实的。</span></p><br/><p><span style="color: #000000;">于是这就很有意思了,我闲着也是无聊,就去查了一下胡适日记全集,摘录了当中的原文,也算是一种学术了。</span></p><br/><p><span style="color: #000000;">P.S. 胡适的日记还是很有意思的,看看就明白为什么人家打牌都成为大师了。图书馆里应该能找到这本,被我上次偶尔翻到,在二楼社科图书馆进去往左走的某架上,胡适全集,有四十几本好像,每本都跟字典一样厚,有空去翻翻吧。</span></p><br/><p><strong>&nbsp;</strong></p><br/><p><strong><span style="color: #000000;">原帖:</span></strong></p><br/><p><span style="background-color: #cc99ff;"><span style="color: #000000;">7月4日 </span></span></p><br/><p><span style="background-color: #cc99ff;"><span style="color: #000000;">新开这本日记,也为了督促自己下个学期多下些苦功。先要读完手边的莎士比亚的《亨利八世》... </span></span></p><br/><p><span style="background-color: #cc99ff;"><span style="color: #000000;">… </span></span></p><br/><p><span style="background-color: #cc99ff;"><span style="color: #000000;">7月13日 </span></span></p><br/><p><span style="background-color: #cc99ff;"><span style="color: #000000;">打牌。 </span></span></p><br/><p><span style="background-color: #cc99ff;"><span style="color: #000000;">7月14日 </span></span></p><br/><p><span style="background-color: #cc99ff;"><span style="color: #000000;">打牌。 </span></span></p><br/><p><span style="background-color: #cc99ff;"><span style="color: #000000;">7月15日 </span></span></p><br/><p><span style="background-color: #cc99ff;"><span style="color: #000000;">打牌。 </span></span></p><br/><p><span style="background-color: #cc99ff;"><span style="color: #000000;">7月16日 </span></span></p><br/><p><span style="background-color: #cc99ff;"><span style="color: #000000;">胡适之啊胡适之!你怎么能如此堕落!先前订下的学习计划你都忘了吗? <br>子曰:“吾日三省吾身。”...不能再这样下去了! </span></span></p><br/><p><span style="background-color: #cc99ff;"><span style="color: #000000;">7月17日 </span></span></p><br/><p><span style="background-color: #cc99ff;"><span style="color: #000000;">打牌。 </span></span></p><br/><p><span style="background-color: #cc99ff;"><span style="color: #000000;">7月18日 </span></span></p><br/><p><span style="background-color: #cc99ff;"><span style="color: #000000;">打牌。<br></span></span></p><br/><p><span style="color: #000000;">&nbsp;</span></p><br/><p><strong><span style="color: #000000;">考据帖:</span></strong></p><br/><p><span style="background-color: #ffff99;"><span style="color: #000000;">1、……查《胡适留学日记》,卷一所记为1911年1月30日到10月30日,卷二为1912年9月25日至12月28日。卷三以后,则每篇标明题目,多为时事评论,不再是杂记体例。所以按照引用的“7月4日”云云,只能存在于卷一。 <br>  而卷一中与网上流传对应的日期却并非如流传的样子,可知此系伪造。但那几天胡适常常打牌却是真的。向来是根据此迹象,模仿其口气伪造出来的。 <br>  不过,可见写这段《老一代学术青年的日记》的人读过此日记,且所写行文风趣,适足以博开心一笑。只怕大家误为真实记载,故查证如此。</span></span></p><br/><p><span style="background-color: #ffff99;"><span style="color: #000000;">2、经查 《胡适留学日记》中虽然“打牌”出现次数不少(卷一) <br>    但楼主所示日期之下 却不能找到对应文字 <br>    卷一(1911年)七月份出现“打牌”字眼的有以下日期: <br>    二日、三日、五日、六日、七日、八日、二十一日、二十二日、二十四日、二十五日、二十九日 <br>    都很“神奇”的绕开了楼主所示日期 <br>    而七月四日与七月十六日下面楼主概括的“大意”也找不到 <br>    ……尽管楼主自称帖子所说是“大意” <br>    但是“大意”到连日期都对不上 就太说不过去了 <br>    如果不是真确记得 为什么敲下具体的日期?——以取信他人?不足取也。</span></span></p><br/><p><span style="color: #000000;">&nbsp;</span></p><br/><p><strong><span style="color: #000000;">原文考据:(摘自《胡适日记全编:1910-1914》卷一)</span></strong></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">胡适 一九一一年一月卅日至十月卅日(在康乃耳大学农学院)</span></span></span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">二月五日:今日起戒吸纸烟。刘千里以电话邀打牌。读《左传》两卷。</span></span></span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">二月廿日:连日似太忙碌,昨夜遗精,颇以为患。今日访Dr. Wright,询之,医云无害也。<em>(我只是觉得这条比较精彩)</em></span></span></span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">三月十日:夜打牌,晏睡。</span></span></span></span></p><br/><p><span style="color: #000000;">&nbsp;</span></p><br/><p><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">四月九日:至沈君处打牌,十二时始归。</span></span></span></p><br/><p><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">四月廿九日:天时骤暖至八十度以上,不能读书,与沈、陈诸君打纸牌,又与刘、侯诸君打中国牌。</span></span></span></p><br/><p><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">四月卅日:晏起。读生物学。打牌。</span></span></span></p><br/><p><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">五月六日:打牌。夜赴中国学生会。</span></span></span></p><br/><p><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">五月十二日:打牌。</span></span></span></p><br/><p><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">五月十四日:夜与刘千里诸人打牌。刘君已毕业,云下星期二将归祖国矣。</span></span></span></p><br/><p><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">六月五日:考生物学。下午考德文。夜打牌。</span></span></span></p><br/><p><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">六月十二日:打牌。</span></span></span></p><br/><p><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">六月廿八日:今日始习打网球。夜打牌。</span></span></span></p><br/><p><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">七月二日:天热不能作事。打牌消遣。</span></span></span></p><br/><p><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">七月三日:今日天气百一十度。打牌。</span></span></span></p><br/><p><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">七月五日:往暑期学校注册。打牌。</span></span></span></p><br/><p><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">七月六日:暑期学校第一日,化学。打牌。</span></span></span></p><br/><p><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">七月七日:上课。打牌。</span></span></span></p><br/><p><span style="color: #000000;"><span style="background-color: #99ccff;"><span style="color: #000000;">七月八日:<span style="background-color: #99ccff;">无事。打牌。天稍稍凉矣。</span></span></span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">七月廿一日:化学第二小试……打牌。</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">七月廿二日:打牌。读美国短篇名著数种。</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">七月廿四日:上课。得德争一书。打牌。演化学算题。</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">七月廿五日:上课。作书复德争。打牌。</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">七月廿九日:读《马太福音》。读Samuel Daniel情诗数章。打牌。</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">八月四日:化学第四小考。极不称意;平生考试,此为最下。打牌。</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">八月五日:打牌。</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">八月十日:连日或以读书,或以打牌,恒子夜始寝,今日觉有不适,故以此矫之。</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">八月十一日:夜打牌。</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">八月十八日:读马可梨之“History”及“Johnson”。打牌。</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">八月廿三日:夜打牌。</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">八月廿四日:是日,打牌两次。读弥尔顿小诗。</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">八月廿五日:打牌。</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">八月廿六日:读德文诗歌“Lyrics and Ballads”。打牌。</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">八月卅日:晏起。打牌。</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">九月三日:读仲马小说。打牌。</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">九月四日:为休息之日。打牌。读仲马小说……伟矣哉,小说之王也!</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">九月五日:读小说。打牌。</span></span></p><br/><p><span style="background-color: #99ccff;"><span style="color: #000000;">九月六日:昨日,与金涛君相戒不复打牌。</span></span></p><br/><p><span style="color: #000000;">(关于打牌的记载至此为止)</span></p>

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